Rebutia albopectinata

Rebutia albopectinata is a Bolivian plant. The plant I have has developed over time a tight clump of probably couple hundred heads.  It has a neat appearance with tight net of spines.
The nice red flowers are easily produced, as with all the Rebutias. This picture shows the very beginning of blooming.  All the small black buds that are hiding around plant's heads will develop quickly, and in several days the whole plant will be hidden under a dense blanket of red flowers.